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Multilayer ceramic capacitor

A technology of ceramic capacitors and laminates, which is applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve the problems of moisture resistance decline, base electrode layer cracks, etc., and achieve the effect of improving moisture resistance

Pending Publication Date: 2022-04-12
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, during the plating process, the glass component is eluted from the base electrode layer due to the influence of the plating solution, and as a result, cracks may occur in the base electrode layer, and the moisture resistance may decrease.

Method used

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  • Multilayer ceramic capacitor
  • Multilayer ceramic capacitor
  • Multilayer ceramic capacitor

Examples

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Embodiment Construction

[0055] Hereinafter, the multilayer ceramic capacitor 1 according to the embodiment of the present invention will be described. figure 1 It is a schematic perspective view of the multilayer ceramic capacitor 1 of the embodiment. figure 2 yes figure 1 A cross-sectional view of the multilayer ceramic capacitor 1 taken along line II-II. image 3 yes figure 1 A cross-sectional view of the multilayer ceramic capacitor 1 taken along line III-III.

[0056] Multilayer ceramic capacitor 1 has a substantially rectangular parallelepiped shape, and includes a laminated body 2 and a pair of external electrodes 3 provided at both ends of the laminated body 2 . The laminated body 2 includes an inner layer portion 11 including a plurality of sets of dielectric layers 14 and internal electrode layers 15 .

[0057] In the following description, the direction in which the pair of external electrodes 3 are provided in the multilayer ceramic capacitor 1 is referred to as the longitudinal direc...

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Abstract

The invention provides a multilayer ceramic capacitor with improved moisture resistance. This laminated ceramic capacitor (1) is provided with: a laminated body (2) in which dielectric layers (14) and internal electrode layers (15) are alternately laminated; base electrode layers (30) that are respectively disposed on both end surfaces of the laminate (2) in the longitudinal direction (L) intersecting the lamination direction (T), are connected to the internal electrode layers (15), and contain glass and copper; and a plating layer (31) disposed on the outside of the base electrode layer (30), in which a protective layer (33) containing sulfur is formed between the glass included in the base electrode layer (30) and the plating layer (31).

Description

technical field [0001] The present invention relates to laminated ceramic capacitors. Background technique [0002] Conventionally, a laminated ceramic capacitor having external electrodes provided at both ends of a laminate in which side spacers are provided on both sides of a laminate chip on which an internal electrode layer and a dielectric layer are laminated (refer to Patent Literature 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2018-148117 [0006] In some cases, the external electrode includes a base electrode layer and includes a plating layer on the outside thereof, and the base electrode layer includes glass. In this case, during the plating process, the glass component is eluted from the base electrode layer due to the influence of the plating solution. As a result, cracks may occur in the base electrode layer, and moisture resistance may decrease. Contents of the invention [0007] ...

Claims

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Application Information

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IPC IPC(8): H01G4/008H01G4/232H01G4/12H01G4/30
CPCH01G4/2325H01G4/30H01G4/224H01G4/0085H01G4/1218H01G4/1209H01G4/232H01G4/012H01G4/008H01G4/1227
Inventor 北原庆汰齐藤雄太大川纪行赤泽亮介高桥武文若岛诚宽黑须勇太森昭人
Owner MURATA MFG CO LTD
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